Arianne is an engine to develop multiplayer online games like Stendhal
A simple cross-platform game engine for creating old-school 2D games
CSG for jMonkey
X3D Prototypes for the SMUOS Component
IRB is a game creation toolkit
2D ARPG Engine
Educational framework for OpenGLES, OpenCL and OpenAL
Java Gamepad API for multiple platforms
A multiplatform game engine for interactive fiction experiences
An extensible development framework for roleplay games.
DiaT is a Textadventure
Decodes the login credentials stored by the minecraft launcher
Framework for a graphical point and click adventure game in Java
AMOS BASIC reimplementation in Java
A cross-platform Java 2D graphics library using OpenGL.